import pygal
from pygal.style import LightColorizedStyle as LCS, LightStyle as LS

my_style = LS(base_style=LCS)
chart = pygal.Bar(style=my_style, x_label_roatation=45, show_legend=False)
chart.title = 'Python Project'
chart.x_labels = ['httpie','django','flask']
plot_dirct = [{'value':16101,'label':'Description of httpie.'},
{'value':15028,'label':'Description of django.'},
{'value':14798,'label':'Description of flask.'},
]
chart.add('',plot_dirct)
chart.render_to_file('bar_descriptions.svg')